Tell that to the locals.

[Then she points to Spiritomb, or rather, the rock holding Spiritomb.]

That rock carries a hundred and eight souls that were sealed away for causing too much mischief. At some point she was out to avenge the souls that made up her entire being. But now she just pulls pranks and freaks out strangers. She can also put people into a deep sleep and mentally torment them through their dreams. I'd show you a demo, but I'm pretty sure the guys wouldn't appreciate their dreams being invaded on my first day here.